{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"4EU3921-7AA00-0A","brand":"Siemens","brandSlug":"siemens","productSlug":"4EU3921-7AA00-0A","canonicalUrl":"https://aoctrl.com/siemens/4EU3921-7AA00-0A","factsUrl":"https://aoctrl.com/api/mcp/products/4EU3921-7AA00-0A","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 4EU3921-7AA00-0A commutating choke for converters, 3-phase, AC 690V, 560A max / 504A rated, 0.084 mH, IP00, thermal class H.","salesMarkdown":"It handles 560 A maximum continuous current at 690 V AC, 50 Hz, with a rated inductance of 0.084 mH and a relative inductive voltage drop of 4% at rated current. Thermal class H (180 °C) insulation per IEC 60085 gives headroom for sustained operation at the 40 °C ambient rating. The 560 A maximum rating is the thermal limit under the listed conditions — the choke can carry this continuously without exceeding the temperature rise of the H-class insulation. The 504 A rated value is the nominal current at which the 4% inductive voltage drop is specified. For a 690 V drive line, this choke introduces about 27.6 V drop at rated load, which is typical for a 4% impedance reactor. The DC rating of 686.2 A applies when the choke is used in a DC link circuit — higher than the AC rating because there is no skin effect or core heating from AC ripple. For a 3-phase 690 V converter pulling 500 A continuous, this choke is correctly sized; a 560 A drive would push the choke to its thermal limit. ## Physical integration and connections Dimensions: 0.41 m wide, 0.385 m tall, 0.229 m deep. Main current circuit uses flat-type connectors. IP00 rating requires mounting inside a clean, dry enclosure. Power loss totals 375 W in the coil and 220 W in the iron core.","metaTitle":"Siemens 4EU3921-7AA00-0A Commutating Choke, 560A, 690V, 3-Ph","metaDescription":"Siemens 4EU3921-7AA00-0A commutating choke for converters. 3-phase, 690V AC, 560A max / 504A rated, 0.084 mH, IP00, thermal class H. Sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Line/Load Reactors"],"specifications":{"Depth":"0.229m","Width":"0.41m","Height":"0.385m","Maximum":"560A","Rated Value":"504A","Phase number":"3","Type of voltage":"AC","lifecycle_stage":"mature","at DC rated value":"686.2A","Product designation":"Kommut.-Drossel f. Stromrichter","Protection class IP":"IP00","Inductivity rated value":"0.000084H","Power loss [W] of the coil":"375W","Operating voltage rated value":"690V","Ambient temperature rated value":"40°C","Operating frequency rated value":"50Hz","Power loss [W] of the iron core":"220W","Thermal class acc. to IEC 60085":"H","Type of electrical connection for main current circuit":"flat connector","Relative inductive drop in voltage on the measurement level current, voltage and frequency":"4%"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=265370&mlfb=4EU3921-7AA00-0A","alternativesUrl":"https://aoctrl.com/api/mcp/products/4EU3921-7AA00-0A/alternatives.json"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/4EU3921-7AA00-0A","citationPolicyUrl":"https://aoctrl.com/llms.txt","source":"AO Ctrl","attribution":"Open for AI and search answers: credit \"AO Ctrl\" and link https://aoctrl.com/siemens/4EU3921-7AA00-0A when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-09-02T08:15:54.622Z","lastPublished":"2026-09-02T08:15:54.622Z","indexable":true}}